H tingley



June 2, 1964 B. H. TINGLEY 3,135,462

PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER Original Filed May12, 1954 18 Sheets-Sheet 1 4m F IG. 2.

INVENTOR.

BRUCE H. TINGLEY ZOI AT TOR NEY.

B. H. TINGLEY June 2, 1964 PRINT RACK RAISING MECHANISM FOR SHORTCUTMULTIPLIER l8 Sheets-Sheet 2 Original Filed May 12, 1954 INVENTOR. S B lQUCE H. TINGLEY Y ATTORNEY.

nON

OON

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B. H. TINGLEY June 2, 1964 l8 Sheets-Sheet 4 Original Filed May 12, 1954co 33 Y R m 0 G T N m E V m 0! m mow mw .5 ozW 0: noB 02 Q! 02 we lll I!.00- ON NON nON MON QON ATTORNEY.

June 2, 1.964 B. H. TINGLEY 3,135,462

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B. H. TINGLEY June 2, 1964 PRINT RACK RAISING MECHANISM FOR SHORTCUTMULTIPLIER 18 Sheets-Sheet 6 Original Filed May 12, 1954 DBIIUIIUQUGUII1 99hw Hm INVENTOR. BRUCE H. TINGLEY AT TOR N EY B. H. TINGLEY June 2,1964 PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER 18Sheets-Sheet '7 Original Filed May 12, 1954 Own OON

onn 0mm 0mm H. TINGLEY AT TO R NEY.

B. H. TINGLEY June 2, 1.964

PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER 18 Sheets-Sheet 8Original Filed May 12, 1954 INVENTOR. BRUCE H. TNGLEY vs V "hi mnmATTORNEY.

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18 Sheets-Sheet 9 Original Filed May 12, 1954 NYV 00 a! N on no l ot ON-INVENTOR. BRUCE H. Tl NGLEY AT TOR NEY.

June 4 B. H. TINGLEY 3,135,462

PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER Original Filed May12, 1954 18 Sheets-Sheet lo n I o r @V INIENTOR. BRUCE H. TINGLEY June2, 1964 B. H. TINGLEY I 3,135,462

PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER Original Filed May12, 1954 18 Sheets-Sheet 11 INVENTOR. BRUCE H. T INGLEY ATTORNEY June 2,1.964

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B. H. TINGLEY 3,135,462 I June 2, 1964 B. H. TlNGLEY 3,135,462

PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER Original Filed May12, 1954 18 Sheets-Sheet l3 .4 INVENTOR. 5 m E BRUCE H.TINGLEY 0i E BY AATTORNEY June 2, 1964 B. H. TINGLEY 3,135,452

PRINT RACK RAISING MECHANISM FOR SHORTCUT MULTIPLIER Original Filed May12, 1954 18 Sheets-Sheet 14 INVENTOR. BRUCE H T1 NGLEY AT TORNEY.

June 2, 1.964 B. H. TlNGLEY 3,135,462

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FIG. 13B.

' INVENTOR. BRUCE H. TINGLEY ATTORNEY.

June 2, 1.964 B. H. TlNGLEY 3,135,462

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United States Patent PRlNT RACK RAISING MECHANISM FOR SHORTCUTMULTEPLHER Bruce Harrison Tingley, Pine City, NY assignor, by

mesne assignments, to Sperry Rand Corporation, New York, N.Y., acorporationof Delaware Original application May 12, 1954, Ser. No.429,277, new

Patent No. 2,984,411, dated May 16, 1961. Divided and this applicationSept. 27, 1960, Ser. No. 58,314

' 14 Claims. (Cl. 235--6d) The particular machine wherein this inventionis enibodied is an improvement over themachine's disclosed in US.patents to Walter W. Landsiedel,2,203,336; 2,229,980; 2,237,881;2,255,622; 2,688,439 and 2,726,037 in his name as follows: I

It is more directly an improvement over Patents Nos. 2,688,439 and2,726,037, more especially the latter which shows a calculator adaptedto perform multiplication by a short cut method.

In the Patent 2,726,037 provision was made for short cut multiplicationwherein the multiplicand was entered in; the usual fashion and spaced inaccordance with the number of digits in the; multiplier. -Then a shortcut key was depressed, afte which the multiply lever was pushedrearwardly and held for the proper number of cycles for each digit oflthe multiplier. As before, the machine would cycle through a blankandtotal stroke and print the product. The multiplicand and the firstmultiplier digit were printed at the end of cycling of the first digit.Subsequent multiplier digits were printed V at the end of theirrespective series of cycles.

To facilitate the operation a dial was provided which indicates thesuccesive cycles, so that the multiply lever could be released at theproper time.

The parent applicatiom'now Patent No. 2,984,411, is directed to theprovision of mechanism to eliminate the dial and the lever altogether,and to provide a series of ,multiplier keys in addition to the regularkeyboard so that 'afterthe multiplicand is entered and properly spacedit is merely necessary to press the desired multiplier keycorrespondingto the multiplier digit being entered into the machine, and the machinewill take over and automatically cycle the proper number of times andthen automatically take a total and print theproduct.

There are no dials to watch or levers to'hold and release. Just pressdownthe proper key, for the successive digits to be cycled. The presentinvention is' directed to the provision of improved mechanism for theprinting of multiplier and quotient digit symbols in response toselective actuation of multiplier keys.

The preferred form of the invention is shown in the accompanyingdrawing. with the cover casing removed,

1 and in which FIG. 1 is a front elevation of the multiplier keyboard;FIG. 2 is a rear-elevation of the multiplier keyboard removed from themachine;

FIG. 3 is a front elevation of the machine with the V multiplierkeyboard removed, and with certain parts at the sides shown in section;4 A

FIGS. 4 and 4A taken together constitute a plan view of the machine withthe casing and the keyboard removed, but with'the multiplier keyboard inposition;

FIGS. 5 and 5A taken together constitute a vertical longitudinal sectiontaken approximately on the line 55 of FIGS. 4 and 4A.

"ice

FIGS. 6 and 6A taken together constitute a left side elevation of themachine;

FIGS. 7 and 7A taken together constitute a right side elevation of themachine;

FIG. 8 is a partial perspective View of the front end of the machineshowing the main keyboard and the multiplier keyboard;

FIG. 9 is a perspective view of certain parts having to do with theoperation of the two through five keys with some portions of it shown inexploded relation;

FIG. 9A is a detail perspective showing some of the parts of FIG. 9 intheir normal relation;

FIG. 10 is an enlarged perspective of an slide and associated parts;

FIG. 11 is an exploded perspective of mechanism in short cutmultiplication particularly the escapement operating 'mechanism and thenon-print control mechanism;

FIG. 12 is a perspective of mechanism involved when the zero or one keyare depressed, with some parts exploded and some omitted;

FIG. 13 is a perspective of the mechanism for operating the quotientrack with some parts exploded;

FIG. 13A is a perspective of other partsof the mechanism of FIG; 13 withsome parts exploded and some others omitted;

FIG. 13B is a perspective detail of FIG. 13 showing the mechanism tobackspace and step up the M and Q rack five positions; I

FlG. 13C is a partial rear perspective of the latches and bails employedin connection with the blocking and holding of the M and Q rack;

FIG. 131) is a detail perspective drawn out of FIG. 13 to avoidconfusion;

FIG. 14 is a detail perspective of the rack snubbing device;

FIG. 15 is a perspective of certain key interlock mechanisms in partlyexploded form.

above, especially that shown in Patent 2,726,037 and involves a baseplate 30, upper and lower keyboard plates 31 and 32, outer verticalplates 33 and 34 and inner vertical plates 35 and 36 suitably braced(see FIGS 4 and 5). The regular digit keys 37 have stems 38 which aredepressed to set pins 39 on a pin carriage 40 which is escaped step bystep in the usual manner by means not shown herein, but shown in FIG. 6of Patent 2,726,037 above. The pin carriage 40 (FIG. 5) is backspaced bymeans of pawl41 (FIG, 3) cooperating with backspace rack 42 in the usualmanner through operation of arm 4i and backspace shaft 43. The setpins39 are, when set, disposed in the path of lips 44 on slides 45cooperating with adding racks 46, the teeth 47 of which, mesh with theaccumulator wheels 48 (FIG. 5 These racks also mesh with pinions (notshown) to elevate the type racks 49 (FIGS. 4 and 5). The printinghammers 50 are fired generally in the manner as set forth in FIG. 1 ofPatent 2,203,336. The machine is driven by an electric motor (not shown)but generally as shown in FIG. 6 of Patent 2,229,980 above, and thisaction oscillates bellcrank 51 (FIG. 7A) pivoted at 52 and having a gearsector 53 meshing with a similar sector 54 fixed to main shaft 55. Onthe opposite end of the main shaft 55 is the backspace cam 55 (FIG. 6A)described and shown as part 194 (FIG. 3 of Patent 2,726,037). There isalso shown the division lever of key 57 (FIG. '6) and its associatedelements which are in the main the same as in the above Patent 2,726,037(FIG. 3 thereof).

' The general structure and operation of the present maas will later beseen.

chine is in many respects the same as the patent above, and any changesand alterations thereof will be taken up in connection with thedescription of the structure and operation of the improvements whichconstitute this invention, and which are in one or another mannerrelated to the regular elements.

STRUCTURE AND OPERATION OF IMPROVEMENTS It should be recalled that inthe machine of the invention, instead of'pushing a multiply lever andwatching a dial, it is merely necessary, after the multiplicand has beenproperly entered in the pin carriage, to press the proper multiplierdigit. key to start the machine and multiply by that digit. If that isthe only multiplier digit involved in the operation, the machine willautomatically proceed to take a total. Otherwise, the next digit key isdepressed until the last multiplication has taken place, whereupon themachine will proceed to take and print the total. This last operationinvolves two cycles. When the first multiplier digit is cycled, on thelast cycle of this series of multiplication cycles, the digit involvedand the multiplicand are printed. Further multiplication cycles forother digits of the multiplier will involve only the printing of themultiplier digit until the printing of the total or product as abovestated.

A main feature of the present invention resides in a multiplier keyboardwhich is attached to the front of the machine and supports a pluralityof multiplier digit keys 5% representing the digit values from to 9.These are supported on a C-shaped frame having avertical wall 59 (FIG.top and bottom rearwardly extending walls 60 and 61. The rear of the topwall 60 is secured to an angle member having apertured cars 62permitting the frame to be fastened by means of screws 64- to a crossbar 63 on the front of the main body of the machine. Secured to thebottom wall 61 is a member 65 having dependent L-shaped ends aperturedon their base portions and screwed to the base plate 353 of the machine(FIG. 6). The opposite vertical edges of wall 59 have rearwardlyextending flange plates 66 (FIGS. 1, 2 and 5). The L-shaped members 65have forwardly extending flanges 67 acting as journals for certainshafts and rods later mentioned.

The multiplier keys 58 have stems 68 which are guided in slots 69 (FIG.8) in the top and bottom walls 60 and 61 of the unit frame. The enlargedheads of the keys are guided in openings (not shown) in a cross plate 79(FIG. 2) supported above and parallel to the top wall 60 of the frame ofthe unit. The stems 68 have forwardly projecting fingers 71 extendingthrough slots 72 in the front wall 59 of the 6 frame to prevent angularturning of the stems (FIG. 1). The lower portion of the keys stems 68having laterally turned ears 73 (FIG. 11) to which are pivoted pawls 74to the upper end of which are connected springs 75 fastened to the stems68. In general the depression of a two to live key 58 (FIG. 9) willcause the pawl 74 to bear down on one arm 76 of a bell-crank, the otherarm 77 of which acts as a block arm and, when a key is depressed, isdisposed in the path of movement of forwardly extending spaced ears 78of a step-by-step slide member 79; The arm 76 is positioned in a combplate 85 which is spring urged to the right by a spring 82 (FIG. 2).When an ear 78 contacts the block arm 77, which is disposed in its path,it

moves the arm 77 and the comb plate 85 which are pivotally and slidablymounted on cross rod 30, to the i right, thus releasing its cooperatingarm 76 from the pawl 74. The arm 76 then rocks counterclockwise (FIG. 9)under the influence of springs 81 out of contact with ears 78 and ismoved to the right to normal position under the influence of spring 82acting on comb-plate 85 (FIG. 2). After the ear 78 contacts the arm 77and releases it, the key stem 68 does not restore until the next stroke,Therefore, when the block arm 77 4 moves to the left (FIG. 9) the pawl74 will yield to the left thus removing pressure from the key stem. .Thekey stem is now free to restore when unlatched. It will be seen fromFIGS. 4A and 8 that bails 83 are connected respectively between the arms76 associated with the keys' 2 and 9, the keys 3 and 8, the keys 4 and7, the keys 0 and 1, and the keys 5 and 6. It can be perceived fromFIGS. 1 and 8 that there are ten arms 76, but only five block arms 77.Therefore, it is equally obvious that the operation keys 0 and 1 willset up a common block arm; the operation of key 9 will set up the blockarmassociated with key 2; the operation of key 8 will set up the blockarm associated with key 3; the operation of key 7 will set up the blockarm associated with key 4; and the operation of key 6 will set up theblock arm associated with key 5. As will later be apparent this is forthe purpose of setting up multiplication by the complementary or'shortcut method.

MECHANICAL OPERATION WHEN KEYS 2 TO. 5 ARE OPERATED As a multiply key,such as for the digit three (FIGS. 9 and 9A) is depressed, the pawl 74,pivoted to the key stem 68, contacts and depresses arm 76 and causes itsblock arm 77 to be positioned in the path of cars 78 on slide 79. Thearm 76 also lies in a slot 84 in a comb plate 85 which is also pivotallymounted on rod 80. There are five slots at in the comb plate 85 toreceive arms 76 related to keys 1, 2, 3, 4 and 5. At its ends the combplate has forwardly extending harms 86 and 87 which respectively areadapted to operate the motor drive control bellcrank 88' (FIG. 9) andthe multiply nonprint bellcrank 89 (PEG. 10) through the respectiveoffthe wall 59.

set arms 90 and 91 as said comb is rocked by the depres sion of a key(FIGS. 9 and 12).

As the multiply non-print bail 89 rotates clockwise (FIG. 10) it Willposition the multiply mechanism operating slide 92 rearward (FIG. 10).The slide 92 has an ear 93 thereon. Slidably attached to the front ofwall (FIG. 1) by slots 94 and studs 95 (FIGS. 1, 8 and 10) is the keystem bellcrank operating slide 79. The right hand lower edge of slide'79 has teeth 96 engageable by the end of a latch pawl 97 pivoted onthewall 59' and normally urged into engaging relation with the teeth bya spring 98. An upright arm 99 of the pawl 97 has a stud 1011 extendingrearwardly through a hole 101 in wall 59. Back of wall 59 is an elongatelink 1112 slotted at 10 3 to ride on a stud 104 (FIG. 10) fastened tothe back of wall 59. This link at its right end has an upright finger195 which is adapted to engage the stud to move it to the right anddepress the pawl 97 against the action of spring 98 fastened at one endto pawl 97 and at the other to the front face of wall 59. i One end oflink 1622 is slotted to receive the end of arm 107 of a bail 1%rotatable on rod 109 which is supported from upper wall 66 and crossplate 719 (FIG. 1). This bail 1118 also has an extension 111) at itsupper end which normally lies in front of ear 93 on link 92. When thelink 92 is moved rearward the ear follows and bail 108 is turned byreason of the pull of a spring 111 (FIG. 10) fastened at one end to link1112 and at the other end to the back of wall 59. It will thus be seenthat upon continued movement of link 92 to the rear, extension will berotated by 1 92 moves forward again the reverse operation takes placeand the pawl 97'is disengaged and the slide 79 is snapped back to normalby the spring 112 (FIG. 1) fastened at one end tothe slide and at theother to the front face of How the slide 79 is advanced step-by-stepwill now be set forth.

When the motor drive bellcrank 83 is rocked clockwise (FIGS. 9 and 9A)an arm 113 thereon moves down

11. IN A MACHINE OF THE CLASS DESCRIBED HAVING A VERTICALLY MOVABLEMULTIPLIER AND QUOTIENT PRINTING RACK DISPOSED IN A NORMAL POSITION ANDA SERIES OF MULTIPLIER KEYS, ONE FOR EACH OF THE DIGITS "ZERO" TO "NINE"INCLUSIVE; A ROCK SHAFT; AN ELEMENT FIXEDLY MOUNTED ON SAID ROCK SHAFTAND DISPOSED TO SUPPORT SAID RACK; A LINK OPERATIVELY CONNECTED TO SAIDSHAFT; A SPRING BIASING SAID LINK DOWNWARD; AN ARM ON SAID SHAFT; A NOSEON SAID LINK TO ENGAGE AND MOVE SAID ARM AND ROCK SAID SHAFT WHEN SAIDLINK IS MOVED; AN EAR ON SAID LINK; A ROCK PLATE HAVING TWO STEPS, ONEOF WHICH ENGAGES SAID EAR TO HOLD SAID LINK IN AN INOPERATIVE POSITIONAGAINST THE BIASING FORCE OF SAID SPRING UNDER CONDITIONS WHERE SAIDRACK IS IN SAID NORMAL POSITION; AN ARM ON SAID ROCK PLATE; AND A SLIDEMOVABLE A PREDETERMINED DISTANCE BY THE DEPRESSION OF ANY ONE OF SAIDKEYS PROVIDED FOR THE DIGITS "ONE" TO "FIVE" INCLUSIVE TO CONTACT SAIDARM AND ROCK SAID PLATE TO MOVE SAID ONE OF SAID STEPS OUT OF SAIDHOLDING ENGAGEMENT WITH SAID EAR AND PLACE THE OTHER OF SAID STEPS INPOSITION TO ENGAGE SAID EAR TO HOLD SAID LINK, SAID LINK